1. if n is an integer and not prime number, then n must be(e)

a.the total of three prime numbers

b.the difference between two even numbers

c. the difference between one even number and one odd number

d. the product of one even number and one odd number

e. the product of prime numbers

我知道a~~d都不对，但是为什么e是正确的呢？毕竟n有可能等于1阿

2.函数h(x)是1到x之间艘由偶数的乘积。问h(100)+1的最小值因子是落在那个区域？（e）

(e) 40以上

怎么做出来的？